Modelling 2D Coastal Flooding at Fine-scale Over Vulnerable Lowlands using Satellite-derived Topobathymetry, Hydrodynamic and Overflow Simulations
Antoine Collin
(1, 2)
,
Coraline Calle
(1)
,
Dorothée James
(3, 1, 2, 4)
,
Stéphane Costa
(5)
,
Olivier Maquaire
(5)
,
Robert Davidson
(5)
,
Antonio Trigo-Teixeira
(6)
1
EPHE -
École Pratique des Hautes Études
2 CGEL - Centre de Géo-Écologie Littorale
3 LETG - Dinard - Littoral, Environnement, Télédétection, Géomatique
4 PSL - Université Paris Sciences et Lettres
5 LETG - Caen - Littoral, Environnement, Télédétection, Géomatique
6 CEris, ICIST, Instituto Superior Técnico
2 CGEL - Centre de Géo-Écologie Littorale
3 LETG - Dinard - Littoral, Environnement, Télédétection, Géomatique
4 PSL - Université Paris Sciences et Lettres
5 LETG - Caen - Littoral, Environnement, Télédétection, Géomatique
6 CEris, ICIST, Instituto Superior Técnico
Antoine Collin
- Fonction : Auteur
- PersonId : 11522
- IdHAL : antoine-collin
- ORCID : 0000-0001-9559-7572
Dorothée James
- Fonction : Auteur
- PersonId : 21164
- IdHAL : dorothee-james
- ORCID : 0000-0002-7477-3458
Stéphane Costa
- Fonction : Auteur
- PersonId : 6083
- IdHAL : stephane-costa
- IdRef : 096705426
Olivier Maquaire
- Fonction : Auteur
- PersonId : 6068
- IdHAL : olivier-maquaire
- IdRef : 03137221X
Robert Davidson
- Fonction : Auteur
- PersonId : 5720
- IdHAL : robert-davidson
- ORCID : 0000-0003-1911-705X
- IdRef : 116302283
Résumé
Flooding simulation across shallow waters and lowlands has been successful for the diagnosis and prognosis of the submerged land areas during extreme sea water levels. However this method is traditionally implemented to linear transects (1D) of discretely-measured topobathymetry or medium-to-coarse-grained 2D modelling. This research aims at mapping the coastal flooding risk at very high spatial resolution (1 m) by simulating hazardous cyclonic waves on exposed lands and vulnerable buildings using a combination of satellite-derived topobathymetry, wave transformation and overflow modelling. Applied to the Rangiroa Atoll (French Polynesia), the topobathymetry mapping resulted from the merging of the topography derived from the Pleiades-1 stereo-photogrammetry (R2=0.84) and bathymetry retrieved from the Pleiades-1 radiative transfer modelling (R2=0.71). Associated with the exposure index, the wave simulation of the 1983-cyclone Orama-Nisha produced hazardous heights of 1.78 m before the swash area, what enabled the lowlands' submersion to be mapped. Focused on churches and houses' vulnerability, the standardized flooding risk has been mapped at 1 m, accurately informing the near-future planning for this atoll area.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Résumé |
en
Flooding simulation across shallow waters and lowlands has been successful for the diagnosis and prognosis of the submerged land areas during extreme sea water levels. However this method is traditionally implemented to linear transects (1D) of discretely-measured topobathymetry or medium-to-coarse-grained 2D modelling. This research aims at mapping the coastal flooding risk at very high spatial resolution (1 m) by simulating hazardous cyclonic waves on exposed lands and vulnerable buildings using a combination of satellite-derived topobathymetry, wave transformation and overflow modelling. Applied to the Rangiroa Atoll (French Polynesia), the topobathymetry mapping resulted from the merging of the topography derived from the Pleiades-1 stereo-photogrammetry (R2=0.84) and bathymetry retrieved from the Pleiades-1 radiative transfer modelling (R2=0.71). Associated with the exposure index, the wave simulation of the 1983-cyclone Orama-Nisha produced hazardous heights of 1.78 m before the swash area, what enabled the lowlands' submersion to be mapped. Focused on churches and houses' vulnerability, the standardized flooding risk has been mapped at 1 m, accurately informing the near-future planning for this atoll area.
|
Titre |
en
Modelling 2D Coastal Flooding at Fine-scale Over Vulnerable Lowlands using Satellite-derived Topobathymetry, Hydrodynamic and Overflow Simulations
|
Auteur(s) |
Antoine Collin
1, 2
, Coraline Calle
1
, Dorothée James
3, 1, 2, 4
, Stéphane Costa
5
, Olivier Maquaire
5
, Robert Davidson
5
, Antonio Trigo-Teixeira
6
1
EPHE -
École Pratique des Hautes Études
( 110691 )
- 4-14 Rue Ferrus, 75014 Paris
- France
2
CGEL -
Centre de Géo-Écologie Littorale
( 1157510 )
- 15, boulevard de la mer - 35800 DINARD
- France
3
LETG - Dinard -
Littoral, Environnement, Télédétection, Géomatique
( 497307 )
- 15, boulevard de la mer
35800 Dinard
- France
4
PSL -
Université Paris Sciences et Lettres
( 564132 )
- 60 rue Mazarine 75006 Paris
- France
5
LETG - Caen -
Littoral, Environnement, Télédétection, Géomatique
( 929 )
- Esplanade de la Paix, CS 14032, 14032 Caen cedex 5
- France
6
CEris, ICIST, Instituto Superior Técnico
( 470910 )
- CEris, ICIST, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- Portugal
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2020-05-20
|
Volume |
95
|
Numéro |
sp1
|
Page/Identifiant |
1052
|
Domaine(s) |
|
DOI | 10.2112/SI95-205.1 |
Origine :
Fichiers produits par l'(les) auteur(s)
Loading...